| Message ID | 20240720-a38x-utmi-phy-v3-5-4c16f9abdbdc@solid-run.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | phy: mvebu-cp110-utmi: add support for armada-380 utmi phys | expand |
On 20-07-24, 16:19, Josua Mayer wrote: > Armada 380 has similar USB-2.0 PHYs as CP-110. The differences are: > - register base addresses > - gap between port registers > - number of ports: 388 has three, cp110 two > - device-mode mux bit refers to different ports > - syscon register's base address (offsets identical) > - armada-8k uses syscon for various drivers, a38x not > > Differentiation uses of_match_data with distinct compatible strings. > > Add support for Armada 380 PHYs by partially restructuting the driver: > - Port register pointers are moved to the per-port private data. > - Add armada-38x-specific compatible string and store enum value in > of_match_data for differentiation. > - Add support for optional regs usb-cfg and utmi-cfg, to be used instead > of syscon. > > Signed-off-by: Josua Mayer <josua@solid-run.com> > --- > drivers/phy/marvell/phy-mvebu-cp110-utmi.c | 209 +++++++++++++++++++++++------ > 1 file changed, 166 insertions(+), 43 deletions(-) > > diff --git a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c > index 4922a5f3327d..4341923e85bc 100644 > --- a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c > +++ b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c > @@ -19,7 +19,7 @@ > #include <linux/usb/of.h> > #include <linux/usb/otg.h> > > -#define UTMI_PHY_PORTS 2 > +#define UTMI_PHY_PORTS 3 > > /* CP110 UTMI register macro definetions */ > #define SYSCON_USB_CFG_REG 0x420 > @@ -76,32 +76,44 @@ > #define PLL_LOCK_DELAY_US 10000 > #define PLL_LOCK_TIMEOUT_US 1000000 > > -#define PORT_REGS(p) ((p)->priv->regs + (p)->id * 0x1000) > +enum mvebu_cp110_utmi_type { > + /* 0 is reserved to avoid clashing with NULL */ > + A380_UTMI = 1, > + CP110_UTMI = 2, > +}; > + > +struct mvebu_cp110_utmi_port; why forward declare and not move the structs instead? > > /** > * struct mvebu_cp110_utmi - PHY driver data > * > - * @regs: PHY registers > + * @regs_usb: USB configuration register > * @syscon: Regmap with system controller registers > * @dev: device driver handle > * @ops: phy ops > + * @ports: phy object for each port > */ > struct mvebu_cp110_utmi { > - void __iomem *regs; > + void __iomem *regs_usb; > struct regmap *syscon; > struct device *dev; > const struct phy_ops *ops; > + struct mvebu_cp110_utmi_port *ports[UTMI_PHY_PORTS]; > }; > > /** > * struct mvebu_cp110_utmi_port - PHY port data > * > + * @regs: PHY registers > + * @regs_cfg: PHY config register > * @priv: PHY driver data > * @id: PHY port ID > * @dr_mode: PHY connection: USB_DR_MODE_HOST or USB_DR_MODE_PERIPHERAL > */ > struct mvebu_cp110_utmi_port { > struct mvebu_cp110_utmi *priv; > + void __iomem *regs; > + void __iomem *regs_cfg; > u32 id; > enum usb_dr_mode dr_mode; > }; > @@ -118,47 +130,47 @@ static void mvebu_cp110_utmi_port_setup(struct mvebu_cp110_utmi_port *port) > * The crystal used for all platform boards is now 25MHz. > * See the functional specification for details. > */ > - reg = readl(PORT_REGS(port) + UTMI_PLL_CTRL_REG); > + reg = readl(port->regs + UTMI_PLL_CTRL_REG); why not handle this as a preparatory patch for this? Helps in review > reg &= ~(PLL_REFDIV_MASK | PLL_FBDIV_MASK | PLL_SEL_LPFR_MASK); > reg |= (PLL_REFDIV_VAL << PLL_REFDIV_OFFSET) | > (PLL_FBDIV_VAL << PLL_FBDIV_OFFSET); > - writel(reg, PORT_REGS(port) + UTMI_PLL_CTRL_REG); > + writel(reg, port->regs + UTMI_PLL_CTRL_REG); > > /* Impedance Calibration Threshold Setting */ > - reg = readl(PORT_REGS(port) + UTMI_CAL_CTRL_REG); > + reg = readl(port->regs + UTMI_CAL_CTRL_REG); > reg &= ~IMPCAL_VTH_MASK; > reg |= IMPCAL_VTH_VAL << IMPCAL_VTH_OFFSET; > - writel(reg, PORT_REGS(port) + UTMI_CAL_CTRL_REG); > + writel(reg, port->regs + UTMI_CAL_CTRL_REG); > > /* Set LS TX driver strength coarse control */ > - reg = readl(PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); > + reg = readl(port->regs + UTMI_TX_CH_CTRL_REG); > reg &= ~TX_AMP_MASK; > reg |= TX_AMP_VAL << TX_AMP_OFFSET; > - writel(reg, PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); > + writel(reg, port->regs + UTMI_TX_CH_CTRL_REG); > > /* Disable SQ and enable analog squelch detect */ > - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); > + reg = readl(port->regs + UTMI_RX_CH_CTRL0_REG); > reg &= ~SQ_DET_EN; > reg |= SQ_ANA_DTC_SEL; > - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); > + writel(reg, port->regs + UTMI_RX_CH_CTRL0_REG); > > /* > * Set External squelch calibration number and > * enable the External squelch calibration > */ > - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); > + reg = readl(port->regs + UTMI_RX_CH_CTRL1_REG); > reg &= ~SQ_AMP_CAL_MASK; > reg |= (SQ_AMP_CAL_VAL << SQ_AMP_CAL_OFFSET) | SQ_AMP_CAL_EN; > - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); > + writel(reg, port->regs + UTMI_RX_CH_CTRL1_REG); > > /* > * Set Control VDAT Reference Voltage - 0.325V and > * Control VSRC Reference Voltage - 0.6V > */ > - reg = readl(PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); > + reg = readl(port->regs + UTMI_CHGDTC_CTRL_REG); > reg &= ~(VDAT_MASK | VSRC_MASK); > reg |= (VDAT_VAL << VDAT_OFFSET) | (VSRC_VAL << VSRC_OFFSET); > - writel(reg, PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); > + writel(reg, port->regs + UTMI_CHGDTC_CTRL_REG); > } > > static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) > @@ -166,22 +178,38 @@ static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) > struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); > struct mvebu_cp110_utmi *utmi = port->priv; > int i; > + int reg; > > /* Power down UTMI PHY port */ > - regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), > - UTMI_PHY_CFG_PU_MASK); > + if (!IS_ERR(port->regs_cfg)) { > + reg = readl(port->regs_cfg); > + reg &= ~(UTMI_PHY_CFG_PU_MASK); > + writel(reg, port->regs_cfg); > + } else > + regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), > + UTMI_PHY_CFG_PU_MASK); why are we doing both raw register read/write and regmap ops... that does not sound correct to me > > for (i = 0; i < UTMI_PHY_PORTS; i++) { > - int test = regmap_test_bits(utmi->syscon, > - SYSCON_UTMI_CFG_REG(i), > - UTMI_PHY_CFG_PU_MASK); > + if (!utmi->ports[i]) > + continue; > + > + if (!IS_ERR(utmi->ports[i]->regs_cfg)) > + reg = readl(utmi->ports[i]->regs_cfg); > + else > + regmap_read(utmi->syscon, SYSCON_UTMI_CFG_REG(i), ®); > + int test = reg & UTMI_PHY_CFG_PU_MASK; > /* skip PLL shutdown if there are active UTMI PHY ports */ > if (test != 0) > return 0; > } > > /* PLL Power down if all UTMI PHYs are down */ > - regmap_clear_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); > + if (!IS_ERR(utmi->regs_usb)) { > + reg = readl(utmi->regs_usb); > + reg &= ~(USB_CFG_PLL_MASK); > + writel(reg, utmi->regs_usb); > + } else > + regmap_clear_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); > > return 0; > } > @@ -191,8 +219,15 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) > struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); > struct mvebu_cp110_utmi *utmi = port->priv; > struct device *dev = &phy->dev; > + const void *match; > + enum mvebu_cp110_utmi_type type; > int ret; > u32 reg; > + u32 sel; > + > + match = device_get_match_data(utmi->dev); > + if (match) > + type = (enum mvebu_cp110_utmi_type)(uintptr_t)match; > > /* It is necessary to power off UTMI before configuration */ > ret = mvebu_cp110_utmi_phy_power_off(phy); > @@ -208,16 +243,45 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) > * to UTMI0 or to UTMI1 PHY port, but not to both. > */ > if (port->dr_mode == USB_DR_MODE_PERIPHERAL) { > - regmap_update_bits(utmi->syscon, SYSCON_USB_CFG_REG, > - USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK, > - USB_CFG_DEVICE_EN_MASK | > - (port->id << USB_CFG_DEVICE_MUX_OFFSET)); > + switch (type) { > + case A380_UTMI: > + /* > + * A380 muxes between ports 0/2: > + * - 0: Device mode on Port 2 > + * - 1: Device mode on Port 0 > + */ > + if (port->id == 1) > + return -EINVAL; > + sel = !!(port->id == 0); > + break; > + case CP110_UTMI: > + /* > + * CP110 muxes between ports 0/1: > + * - 0: Device mode on Port 0 > + * - 1: Device mode on Port 1 > + */ > + sel = port->id; > + break; > + default: > + return -EINVAL; > + } > + if (!IS_ERR(utmi->regs_usb)) { > + reg = readl(utmi->regs_usb); > + reg &= ~(USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK); > + reg |= USB_CFG_DEVICE_EN_MASK; > + reg |= (sel << USB_CFG_DEVICE_MUX_OFFSET); > + writel(reg, utmi->regs_usb); > + } else > + regmap_update_bits(utmi->syscon, SYSCON_USB_CFG_REG, > + USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK, > + USB_CFG_DEVICE_EN_MASK | > + (sel << USB_CFG_DEVICE_MUX_OFFSET)); > } > > /* Set Test suspendm mode and enable Test UTMI select */ > - reg = readl(PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); > + reg = readl(port->regs + UTMI_CTRL_STATUS0_REG); > reg |= SUSPENDM | TEST_SEL; > - writel(reg, PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); > + writel(reg, port->regs + UTMI_CTRL_STATUS0_REG); > > /* Wait for UTMI power down */ > mdelay(1); > @@ -226,16 +290,21 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) > mvebu_cp110_utmi_port_setup(port); > > /* Power UP UTMI PHY */ > - regmap_set_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), > - UTMI_PHY_CFG_PU_MASK); > + if (!IS_ERR(port->regs_cfg)) { > + reg = readl(port->regs_cfg); > + reg |= UTMI_PHY_CFG_PU_MASK; > + writel(reg, port->regs_cfg); > + } else > + regmap_set_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), > + UTMI_PHY_CFG_PU_MASK); > > /* Disable Test UTMI select */ > - reg = readl(PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); > + reg = readl(port->regs + UTMI_CTRL_STATUS0_REG); > reg &= ~TEST_SEL; > - writel(reg, PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); > + writel(reg, port->regs + UTMI_CTRL_STATUS0_REG); > > /* Wait for impedance calibration */ > - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_CAL_CTRL_REG, reg, > + ret = readl_poll_timeout(port->regs + UTMI_CAL_CTRL_REG, reg, > reg & IMPCAL_DONE, > PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); > if (ret) { > @@ -244,7 +313,7 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) > } > > /* Wait for PLL calibration */ > - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_CAL_CTRL_REG, reg, > + ret = readl_poll_timeout(port->regs + UTMI_CAL_CTRL_REG, reg, > reg & PLLCAL_DONE, > PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); > if (ret) { > @@ -253,7 +322,7 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) > } > > /* Wait for PLL ready */ > - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_PLL_CTRL_REG, reg, > + ret = readl_poll_timeout(port->regs + UTMI_PLL_CTRL_REG, reg, > reg & PLL_RDY, > PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); > if (ret) { > @@ -262,7 +331,12 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) > } > > /* PLL Power up */ > - regmap_set_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); > + if (!IS_ERR(utmi->regs_usb)) { > + reg = readl(utmi->regs_usb); > + reg |= USB_CFG_PLL_MASK; > + writel(reg, utmi->regs_usb); > + } else > + regmap_set_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); > > return 0; > } > @@ -274,7 +348,8 @@ static const struct phy_ops mvebu_cp110_utmi_phy_ops = { > }; > > static const struct of_device_id mvebu_cp110_utmi_of_match[] = { > - { .compatible = "marvell,cp110-utmi-phy" }, > + { .compatible = "marvell,a38x-utmi-phy", .data = (void *)A380_UTMI }, > + { .compatible = "marvell,cp110-utmi-phy", .data = (void *)CP110_UTMI }, Cast to void * are not required to be done > {}, > }; > MODULE_DEVICE_TABLE(of, mvebu_cp110_utmi_of_match); > @@ -285,6 +360,10 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) > struct mvebu_cp110_utmi *utmi; > struct phy_provider *provider; > struct device_node *child; > + void __iomem *regs_utmi; > + void __iomem *regs_utmi_cfg; > + const void *match; > + enum mvebu_cp110_utmi_type type; > u32 usb_devices = 0; > > utmi = devm_kzalloc(dev, sizeof(*utmi), GFP_KERNEL); > @@ -293,18 +372,44 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) > > utmi->dev = dev; > > + match = device_get_match_data(dev); > + if (match) > + type = (enum mvebu_cp110_utmi_type)(uintptr_t)match; > + > + /* Get UTMI memory region */ > + regs_utmi = devm_platform_ioremap_resource(pdev, 0); > + if (IS_ERR(regs_utmi)) { > + dev_err(dev, "Failed to map utmi regs\n"); > + return PTR_ERR(regs_utmi); > + } > + > + /* Get usb config region */ > + utmi->regs_usb = devm_platform_ioremap_resource_byname(pdev, "usb-cfg"); > + if (IS_ERR(utmi->regs_usb) && PTR_ERR(utmi->regs_usb) != -EINVAL) { > + dev_err(dev, "Failed to map usb config regs\n"); > + return PTR_ERR(utmi->regs_usb); > + } > + > + /* Get utmi config region */ > + regs_utmi_cfg = devm_platform_ioremap_resource_byname(pdev, "utmi-cfg"); > + if (IS_ERR(regs_utmi_cfg) && PTR_ERR(regs_utmi_cfg) != -EINVAL) { > + dev_err(dev, "Failed to map usb config regs\n"); > + return PTR_ERR(regs_utmi_cfg); > + } > + > /* Get system controller region */ > utmi->syscon = syscon_regmap_lookup_by_phandle(dev->of_node, > "marvell,system-controller"); > - if (IS_ERR(utmi->syscon)) { > - dev_err(dev, "Missing UTMI system controller\n"); > + if (IS_ERR(utmi->syscon) && PTR_ERR(utmi->syscon) != -ENODEV) { > + dev_err(dev, "Failed to get system controller\n"); > return PTR_ERR(utmi->syscon); > } > > - /* Get UTMI memory region */ > - utmi->regs = devm_platform_ioremap_resource(pdev, 0); > - if (IS_ERR(utmi->regs)) > - return PTR_ERR(utmi->regs); > + if (IS_ERR(utmi->syscon) && > + (IS_ERR(utmi->regs_usb) || IS_ERR(regs_utmi_cfg))) { > + dev_err(dev, "Missing utmi system controller or config regs"); > + return -EINVAL; > + } > > for_each_available_child_of_node(dev->of_node, child) { > struct mvebu_cp110_utmi_port *port; > @@ -326,6 +431,24 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) > return -ENOMEM; > } > > + utmi->ports[port_id] = port; > + > + /* Get port memory region */ > + switch (type) { > + case A380_UTMI: > + port->regs = regs_utmi + port_id * 0x1000; > + break; > + case CP110_UTMI: > + port->regs = regs_utmi + port_id * 0x2000; > + break; > + default: > + return -EINVAL; > + } > + > + /* assign utmi cfg reg */ > + if (!IS_ERR(regs_utmi_cfg)) > + port->regs_cfg = regs_utmi_cfg + port_id * 4; > + > port->dr_mode = of_usb_get_dr_mode_by_phy(child, -1); > if ((port->dr_mode != USB_DR_MODE_HOST) && > (port->dr_mode != USB_DR_MODE_PERIPHERAL)) { > > -- > 2.43.0
Am 25.07.24 um 08:43 schrieb Vinod Koul: > On 20-07-24, 16:19, Josua Mayer wrote: >> Armada 380 has similar USB-2.0 PHYs as CP-110. The differences are: >> - register base addresses >> - gap between port registers >> - number of ports: 388 has three, cp110 two >> - device-mode mux bit refers to different ports >> - syscon register's base address (offsets identical) >> - armada-8k uses syscon for various drivers, a38x not >> >> Differentiation uses of_match_data with distinct compatible strings. >> >> Add support for Armada 380 PHYs by partially restructuting the driver: >> - Port register pointers are moved to the per-port private data. >> - Add armada-38x-specific compatible string and store enum value in >> of_match_data for differentiation. >> - Add support for optional regs usb-cfg and utmi-cfg, to be used instead >> of syscon. >> >> Signed-off-by: Josua Mayer <josua@solid-run.com> >> --- >> drivers/phy/marvell/phy-mvebu-cp110-utmi.c | 209 +++++++++++++++++++++++------ >> 1 file changed, 166 insertions(+), 43 deletions(-) >> >> diff --git a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c >> index 4922a5f3327d..4341923e85bc 100644 >> --- a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c >> +++ b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c >> @@ -19,7 +19,7 @@ >> #include <linux/usb/of.h> >> #include <linux/usb/otg.h> >> >> -#define UTMI_PHY_PORTS 2 >> +#define UTMI_PHY_PORTS 3 >> >> /* CP110 UTMI register macro definetions */ >> #define SYSCON_USB_CFG_REG 0x420 >> @@ -76,32 +76,44 @@ >> #define PLL_LOCK_DELAY_US 10000 >> #define PLL_LOCK_TIMEOUT_US 1000000 >> >> -#define PORT_REGS(p) ((p)->priv->regs + (p)->id * 0x1000) >> +enum mvebu_cp110_utmi_type { >> + /* 0 is reserved to avoid clashing with NULL */ >> + A380_UTMI = 1, >> + CP110_UTMI = 2, >> +}; >> + >> +struct mvebu_cp110_utmi_port; > why forward declare and not move the structs instead? Seemed like the smaller change / more readable as diff. I can move the struct instead! > >> >> /** >> * struct mvebu_cp110_utmi - PHY driver data >> * >> - * @regs: PHY registers >> + * @regs_usb: USB configuration register >> * @syscon: Regmap with system controller registers >> * @dev: device driver handle >> * @ops: phy ops >> + * @ports: phy object for each port >> */ >> struct mvebu_cp110_utmi { >> - void __iomem *regs; >> + void __iomem *regs_usb; >> struct regmap *syscon; >> struct device *dev; >> const struct phy_ops *ops; >> + struct mvebu_cp110_utmi_port *ports[UTMI_PHY_PORTS]; >> }; >> >> /** >> * struct mvebu_cp110_utmi_port - PHY port data >> * >> + * @regs: PHY registers >> + * @regs_cfg: PHY config register >> * @priv: PHY driver data >> * @id: PHY port ID >> * @dr_mode: PHY connection: USB_DR_MODE_HOST or USB_DR_MODE_PERIPHERAL >> */ >> struct mvebu_cp110_utmi_port { >> struct mvebu_cp110_utmi *priv; >> + void __iomem *regs; >> + void __iomem *regs_cfg; >> u32 id; >> enum usb_dr_mode dr_mode; >> }; >> @@ -118,47 +130,47 @@ static void mvebu_cp110_utmi_port_setup(struct mvebu_cp110_utmi_port *port) >> * The crystal used for all platform boards is now 25MHz. >> * See the functional specification for details. >> */ >> - reg = readl(PORT_REGS(port) + UTMI_PLL_CTRL_REG); >> + reg = readl(port->regs + UTMI_PLL_CTRL_REG); > why not handle this as a preparatory patch for this? Helps in review Will do! > >> reg &= ~(PLL_REFDIV_MASK | PLL_FBDIV_MASK | PLL_SEL_LPFR_MASK); >> reg |= (PLL_REFDIV_VAL << PLL_REFDIV_OFFSET) | >> (PLL_FBDIV_VAL << PLL_FBDIV_OFFSET); >> - writel(reg, PORT_REGS(port) + UTMI_PLL_CTRL_REG); >> + writel(reg, port->regs + UTMI_PLL_CTRL_REG); >> >> /* Impedance Calibration Threshold Setting */ >> - reg = readl(PORT_REGS(port) + UTMI_CAL_CTRL_REG); >> + reg = readl(port->regs + UTMI_CAL_CTRL_REG); >> reg &= ~IMPCAL_VTH_MASK; >> reg |= IMPCAL_VTH_VAL << IMPCAL_VTH_OFFSET; >> - writel(reg, PORT_REGS(port) + UTMI_CAL_CTRL_REG); >> + writel(reg, port->regs + UTMI_CAL_CTRL_REG); >> >> /* Set LS TX driver strength coarse control */ >> - reg = readl(PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); >> + reg = readl(port->regs + UTMI_TX_CH_CTRL_REG); >> reg &= ~TX_AMP_MASK; >> reg |= TX_AMP_VAL << TX_AMP_OFFSET; >> - writel(reg, PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); >> + writel(reg, port->regs + UTMI_TX_CH_CTRL_REG); >> >> /* Disable SQ and enable analog squelch detect */ >> - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); >> + reg = readl(port->regs + UTMI_RX_CH_CTRL0_REG); >> reg &= ~SQ_DET_EN; >> reg |= SQ_ANA_DTC_SEL; >> - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); >> + writel(reg, port->regs + UTMI_RX_CH_CTRL0_REG); >> >> /* >> * Set External squelch calibration number and >> * enable the External squelch calibration >> */ >> - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); >> + reg = readl(port->regs + UTMI_RX_CH_CTRL1_REG); >> reg &= ~SQ_AMP_CAL_MASK; >> reg |= (SQ_AMP_CAL_VAL << SQ_AMP_CAL_OFFSET) | SQ_AMP_CAL_EN; >> - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); >> + writel(reg, port->regs + UTMI_RX_CH_CTRL1_REG); >> >> /* >> * Set Control VDAT Reference Voltage - 0.325V and >> * Control VSRC Reference Voltage - 0.6V >> */ >> - reg = readl(PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); >> + reg = readl(port->regs + UTMI_CHGDTC_CTRL_REG); >> reg &= ~(VDAT_MASK | VSRC_MASK); >> reg |= (VDAT_VAL << VDAT_OFFSET) | (VSRC_VAL << VSRC_OFFSET); >> - writel(reg, PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); >> + writel(reg, port->regs + UTMI_CHGDTC_CTRL_REG); >> } >> >> static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) >> @@ -166,22 +178,38 @@ static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) >> struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); >> struct mvebu_cp110_utmi *utmi = port->priv; >> int i; >> + int reg; >> >> /* Power down UTMI PHY port */ >> - regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), >> - UTMI_PHY_CFG_PU_MASK); >> + if (!IS_ERR(port->regs_cfg)) { >> + reg = readl(port->regs_cfg); >> + reg &= ~(UTMI_PHY_CFG_PU_MASK); >> + writel(reg, port->regs_cfg); >> + } else >> + regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), >> + UTMI_PHY_CFG_PU_MASK); > why are we doing both raw register read/write and regmap ops... that > does not sound correct to me Indeed. The next question would be why for Armada 8K / CP110 syscon was chosen. From what I could find the registers accessed by utmi driver are not accessed by other drivers. I am adding raw register access as an alternative, to keep supporting old device-tree specifying syscon handle. I considered writing helper functions for the if-not-error-syscon-else-raw, but between set_bits, clear_bits, global and per-port regs would have ended up with too many. > >> >> for (i = 0; i < UTMI_PHY_PORTS; i++) { >> - int test = regmap_test_bits(utmi->syscon, >> - SYSCON_UTMI_CFG_REG(i), >> - UTMI_PHY_CFG_PU_MASK); >> + if (!utmi->ports[i]) >> + continue; >> + >> + if (!IS_ERR(utmi->ports[i]->regs_cfg)) >> + reg = readl(utmi->ports[i]->regs_cfg); >> + else >> + regmap_read(utmi->syscon, SYSCON_UTMI_CFG_REG(i), ®); >> + int test = reg & UTMI_PHY_CFG_PU_MASK; >> /* skip PLL shutdown if there are active UTMI PHY ports */ >> if (test != 0) >> return 0; >> } >> >> /* PLL Power down if all UTMI PHYs are down */ >> - regmap_clear_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); >> + if (!IS_ERR(utmi->regs_usb)) { >> + reg = readl(utmi->regs_usb); >> + reg &= ~(USB_CFG_PLL_MASK); >> + writel(reg, utmi->regs_usb); >> + } else >> + regmap_clear_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); >> >> return 0; >> } >> @@ -191,8 +219,15 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) >> struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); >> struct mvebu_cp110_utmi *utmi = port->priv; >> struct device *dev = &phy->dev; >> + const void *match; >> + enum mvebu_cp110_utmi_type type; >> int ret; >> u32 reg; >> + u32 sel; >> + >> + match = device_get_match_data(utmi->dev); >> + if (match) >> + type = (enum mvebu_cp110_utmi_type)(uintptr_t)match; >> >> /* It is necessary to power off UTMI before configuration */ >> ret = mvebu_cp110_utmi_phy_power_off(phy); >> @@ -208,16 +243,45 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) >> * to UTMI0 or to UTMI1 PHY port, but not to both. >> */ >> if (port->dr_mode == USB_DR_MODE_PERIPHERAL) { >> - regmap_update_bits(utmi->syscon, SYSCON_USB_CFG_REG, >> - USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK, >> - USB_CFG_DEVICE_EN_MASK | >> - (port->id << USB_CFG_DEVICE_MUX_OFFSET)); >> + switch (type) { >> + case A380_UTMI: >> + /* >> + * A380 muxes between ports 0/2: >> + * - 0: Device mode on Port 2 >> + * - 1: Device mode on Port 0 >> + */ >> + if (port->id == 1) >> + return -EINVAL; >> + sel = !!(port->id == 0); >> + break; >> + case CP110_UTMI: >> + /* >> + * CP110 muxes between ports 0/1: >> + * - 0: Device mode on Port 0 >> + * - 1: Device mode on Port 1 >> + */ >> + sel = port->id; >> + break; >> + default: >> + return -EINVAL; >> + } >> + if (!IS_ERR(utmi->regs_usb)) { >> + reg = readl(utmi->regs_usb); >> + reg &= ~(USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK); >> + reg |= USB_CFG_DEVICE_EN_MASK; >> + reg |= (sel << USB_CFG_DEVICE_MUX_OFFSET); >> + writel(reg, utmi->regs_usb); >> + } else >> + regmap_update_bits(utmi->syscon, SYSCON_USB_CFG_REG, >> + USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK, >> + USB_CFG_DEVICE_EN_MASK | >> + (sel << USB_CFG_DEVICE_MUX_OFFSET)); >> } >> >> /* Set Test suspendm mode and enable Test UTMI select */ >> - reg = readl(PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); >> + reg = readl(port->regs + UTMI_CTRL_STATUS0_REG); >> reg |= SUSPENDM | TEST_SEL; >> - writel(reg, PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); >> + writel(reg, port->regs + UTMI_CTRL_STATUS0_REG); >> >> /* Wait for UTMI power down */ >> mdelay(1); >> @@ -226,16 +290,21 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) >> mvebu_cp110_utmi_port_setup(port); >> >> /* Power UP UTMI PHY */ >> - regmap_set_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), >> - UTMI_PHY_CFG_PU_MASK); >> + if (!IS_ERR(port->regs_cfg)) { >> + reg = readl(port->regs_cfg); >> + reg |= UTMI_PHY_CFG_PU_MASK; >> + writel(reg, port->regs_cfg); >> + } else >> + regmap_set_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), >> + UTMI_PHY_CFG_PU_MASK); >> >> /* Disable Test UTMI select */ >> - reg = readl(PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); >> + reg = readl(port->regs + UTMI_CTRL_STATUS0_REG); >> reg &= ~TEST_SEL; >> - writel(reg, PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); >> + writel(reg, port->regs + UTMI_CTRL_STATUS0_REG); >> >> /* Wait for impedance calibration */ >> - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_CAL_CTRL_REG, reg, >> + ret = readl_poll_timeout(port->regs + UTMI_CAL_CTRL_REG, reg, >> reg & IMPCAL_DONE, >> PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); >> if (ret) { >> @@ -244,7 +313,7 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) >> } >> >> /* Wait for PLL calibration */ >> - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_CAL_CTRL_REG, reg, >> + ret = readl_poll_timeout(port->regs + UTMI_CAL_CTRL_REG, reg, >> reg & PLLCAL_DONE, >> PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); >> if (ret) { >> @@ -253,7 +322,7 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) >> } >> >> /* Wait for PLL ready */ >> - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_PLL_CTRL_REG, reg, >> + ret = readl_poll_timeout(port->regs + UTMI_PLL_CTRL_REG, reg, >> reg & PLL_RDY, >> PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); >> if (ret) { >> @@ -262,7 +331,12 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) >> } >> >> /* PLL Power up */ >> - regmap_set_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); >> + if (!IS_ERR(utmi->regs_usb)) { >> + reg = readl(utmi->regs_usb); >> + reg |= USB_CFG_PLL_MASK; >> + writel(reg, utmi->regs_usb); >> + } else >> + regmap_set_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); >> >> return 0; >> } >> @@ -274,7 +348,8 @@ static const struct phy_ops mvebu_cp110_utmi_phy_ops = { >> }; >> >> static const struct of_device_id mvebu_cp110_utmi_of_match[] = { >> - { .compatible = "marvell,cp110-utmi-phy" }, >> + { .compatible = "marvell,a38x-utmi-phy", .data = (void *)A380_UTMI }, >> + { .compatible = "marvell,cp110-utmi-phy", .data = (void *)CP110_UTMI }, > Cast to void * are not required to be done Ack. > >> {}, >> }; >> MODULE_DEVICE_TABLE(of, mvebu_cp110_utmi_of_match); >> @@ -285,6 +360,10 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) >> struct mvebu_cp110_utmi *utmi; >> struct phy_provider *provider; >> struct device_node *child; >> + void __iomem *regs_utmi; >> + void __iomem *regs_utmi_cfg; >> + const void *match; >> + enum mvebu_cp110_utmi_type type; >> u32 usb_devices = 0; >> >> utmi = devm_kzalloc(dev, sizeof(*utmi), GFP_KERNEL); >> @@ -293,18 +372,44 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) >> >> utmi->dev = dev; >> >> + match = device_get_match_data(dev); >> + if (match) >> + type = (enum mvebu_cp110_utmi_type)(uintptr_t)match; >> + >> + /* Get UTMI memory region */ >> + regs_utmi = devm_platform_ioremap_resource(pdev, 0); >> + if (IS_ERR(regs_utmi)) { >> + dev_err(dev, "Failed to map utmi regs\n"); >> + return PTR_ERR(regs_utmi); >> + } >> + >> + /* Get usb config region */ >> + utmi->regs_usb = devm_platform_ioremap_resource_byname(pdev, "usb-cfg"); >> + if (IS_ERR(utmi->regs_usb) && PTR_ERR(utmi->regs_usb) != -EINVAL) { >> + dev_err(dev, "Failed to map usb config regs\n"); >> + return PTR_ERR(utmi->regs_usb); >> + } >> + >> + /* Get utmi config region */ >> + regs_utmi_cfg = devm_platform_ioremap_resource_byname(pdev, "utmi-cfg"); >> + if (IS_ERR(regs_utmi_cfg) && PTR_ERR(regs_utmi_cfg) != -EINVAL) { >> + dev_err(dev, "Failed to map usb config regs\n"); >> + return PTR_ERR(regs_utmi_cfg); >> + } >> + >> /* Get system controller region */ >> utmi->syscon = syscon_regmap_lookup_by_phandle(dev->of_node, >> "marvell,system-controller"); >> - if (IS_ERR(utmi->syscon)) { >> - dev_err(dev, "Missing UTMI system controller\n"); >> + if (IS_ERR(utmi->syscon) && PTR_ERR(utmi->syscon) != -ENODEV) { >> + dev_err(dev, "Failed to get system controller\n"); >> return PTR_ERR(utmi->syscon); >> } >> >> - /* Get UTMI memory region */ >> - utmi->regs = devm_platform_ioremap_resource(pdev, 0); >> - if (IS_ERR(utmi->regs)) >> - return PTR_ERR(utmi->regs); >> + if (IS_ERR(utmi->syscon) && >> + (IS_ERR(utmi->regs_usb) || IS_ERR(regs_utmi_cfg))) { >> + dev_err(dev, "Missing utmi system controller or config regs"); >> + return -EINVAL; >> + } >> >> for_each_available_child_of_node(dev->of_node, child) { >> struct mvebu_cp110_utmi_port *port; >> @@ -326,6 +431,24 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) >> return -ENOMEM; >> } >> >> + utmi->ports[port_id] = port; >> + >> + /* Get port memory region */ >> + switch (type) { >> + case A380_UTMI: >> + port->regs = regs_utmi + port_id * 0x1000; >> + break; >> + case CP110_UTMI: >> + port->regs = regs_utmi + port_id * 0x2000; >> + break; >> + default: >> + return -EINVAL; >> + } >> + >> + /* assign utmi cfg reg */ >> + if (!IS_ERR(regs_utmi_cfg)) >> + port->regs_cfg = regs_utmi_cfg + port_id * 4; >> + >> port->dr_mode = of_usb_get_dr_mode_by_phy(child, -1); >> if ((port->dr_mode != USB_DR_MODE_HOST) && >> (port->dr_mode != USB_DR_MODE_PERIPHERAL)) { >> >> -- >> 2.43.0
On 25-07-24, 08:38, Josua Mayer wrote: > Am 25.07.24 um 08:43 schrieb Vinod Koul: > > On 20-07-24, 16:19, Josua Mayer wrote: > >> +struct mvebu_cp110_utmi_port; > > why forward declare and not move the structs instead? > Seemed like the smaller change / more readable as diff. > I can move the struct instead! Yes and that can be preparatory as well :-) > > > >> reg &= ~(PLL_REFDIV_MASK | PLL_FBDIV_MASK | PLL_SEL_LPFR_MASK); > >> reg |= (PLL_REFDIV_VAL << PLL_REFDIV_OFFSET) | > >> (PLL_FBDIV_VAL << PLL_FBDIV_OFFSET); > >> - writel(reg, PORT_REGS(port) + UTMI_PLL_CTRL_REG); > >> + writel(reg, port->regs + UTMI_PLL_CTRL_REG); > >> > >> /* Impedance Calibration Threshold Setting */ > >> - reg = readl(PORT_REGS(port) + UTMI_CAL_CTRL_REG); > >> + reg = readl(port->regs + UTMI_CAL_CTRL_REG); > >> reg &= ~IMPCAL_VTH_MASK; > >> reg |= IMPCAL_VTH_VAL << IMPCAL_VTH_OFFSET; > >> - writel(reg, PORT_REGS(port) + UTMI_CAL_CTRL_REG); > >> + writel(reg, port->regs + UTMI_CAL_CTRL_REG); > >> > >> /* Set LS TX driver strength coarse control */ > >> - reg = readl(PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); > >> + reg = readl(port->regs + UTMI_TX_CH_CTRL_REG); > >> reg &= ~TX_AMP_MASK; > >> reg |= TX_AMP_VAL << TX_AMP_OFFSET; > >> - writel(reg, PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); > >> + writel(reg, port->regs + UTMI_TX_CH_CTRL_REG); > >> > >> /* Disable SQ and enable analog squelch detect */ > >> - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); > >> + reg = readl(port->regs + UTMI_RX_CH_CTRL0_REG); > >> reg &= ~SQ_DET_EN; > >> reg |= SQ_ANA_DTC_SEL; > >> - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); > >> + writel(reg, port->regs + UTMI_RX_CH_CTRL0_REG); > >> > >> /* > >> * Set External squelch calibration number and > >> * enable the External squelch calibration > >> */ > >> - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); > >> + reg = readl(port->regs + UTMI_RX_CH_CTRL1_REG); > >> reg &= ~SQ_AMP_CAL_MASK; > >> reg |= (SQ_AMP_CAL_VAL << SQ_AMP_CAL_OFFSET) | SQ_AMP_CAL_EN; > >> - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); > >> + writel(reg, port->regs + UTMI_RX_CH_CTRL1_REG); > >> > >> /* > >> * Set Control VDAT Reference Voltage - 0.325V and > >> * Control VSRC Reference Voltage - 0.6V > >> */ > >> - reg = readl(PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); > >> + reg = readl(port->regs + UTMI_CHGDTC_CTRL_REG); > >> reg &= ~(VDAT_MASK | VSRC_MASK); > >> reg |= (VDAT_VAL << VDAT_OFFSET) | (VSRC_VAL << VSRC_OFFSET); > >> - writel(reg, PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); > >> + writel(reg, port->regs + UTMI_CHGDTC_CTRL_REG); > >> } > >> > >> static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) > >> @@ -166,22 +178,38 @@ static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) > >> struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); > >> struct mvebu_cp110_utmi *utmi = port->priv; > >> int i; > >> + int reg; > >> > >> /* Power down UTMI PHY port */ > >> - regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), > >> - UTMI_PHY_CFG_PU_MASK); > >> + if (!IS_ERR(port->regs_cfg)) { > >> + reg = readl(port->regs_cfg); > >> + reg &= ~(UTMI_PHY_CFG_PU_MASK); > >> + writel(reg, port->regs_cfg); > >> + } else > >> + regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), > >> + UTMI_PHY_CFG_PU_MASK); > > why are we doing both raw register read/write and regmap ops... that > > does not sound correct to me > Indeed. > > The next question would be why for Armada 8K / CP110 syscon was chosen. > From what I could find the registers accessed by utmi driver > are not accessed by other drivers. > > I am adding raw register access as an alternative, > > to keep supporting old device-tree specifying syscon handle. > > I considered writing helper functions for the if-not-error-syscon-else-raw, > but between set_bits, clear_bits, global and per-port regs > would have ended up with too many. Aha, please add the comment so we know why it was done like this few years later
diff --git a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c index 4922a5f3327d..4341923e85bc 100644 --- a/drivers/phy/marvell/phy-mvebu-cp110-utmi.c +++ b/drivers/phy/marvell/phy-mvebu-cp110-utmi.c @@ -19,7 +19,7 @@ #include <linux/usb/of.h> #include <linux/usb/otg.h> -#define UTMI_PHY_PORTS 2 +#define UTMI_PHY_PORTS 3 /* CP110 UTMI register macro definetions */ #define SYSCON_USB_CFG_REG 0x420 @@ -76,32 +76,44 @@ #define PLL_LOCK_DELAY_US 10000 #define PLL_LOCK_TIMEOUT_US 1000000 -#define PORT_REGS(p) ((p)->priv->regs + (p)->id * 0x1000) +enum mvebu_cp110_utmi_type { + /* 0 is reserved to avoid clashing with NULL */ + A380_UTMI = 1, + CP110_UTMI = 2, +}; + +struct mvebu_cp110_utmi_port; /** * struct mvebu_cp110_utmi - PHY driver data * - * @regs: PHY registers + * @regs_usb: USB configuration register * @syscon: Regmap with system controller registers * @dev: device driver handle * @ops: phy ops + * @ports: phy object for each port */ struct mvebu_cp110_utmi { - void __iomem *regs; + void __iomem *regs_usb; struct regmap *syscon; struct device *dev; const struct phy_ops *ops; + struct mvebu_cp110_utmi_port *ports[UTMI_PHY_PORTS]; }; /** * struct mvebu_cp110_utmi_port - PHY port data * + * @regs: PHY registers + * @regs_cfg: PHY config register * @priv: PHY driver data * @id: PHY port ID * @dr_mode: PHY connection: USB_DR_MODE_HOST or USB_DR_MODE_PERIPHERAL */ struct mvebu_cp110_utmi_port { struct mvebu_cp110_utmi *priv; + void __iomem *regs; + void __iomem *regs_cfg; u32 id; enum usb_dr_mode dr_mode; }; @@ -118,47 +130,47 @@ static void mvebu_cp110_utmi_port_setup(struct mvebu_cp110_utmi_port *port) * The crystal used for all platform boards is now 25MHz. * See the functional specification for details. */ - reg = readl(PORT_REGS(port) + UTMI_PLL_CTRL_REG); + reg = readl(port->regs + UTMI_PLL_CTRL_REG); reg &= ~(PLL_REFDIV_MASK | PLL_FBDIV_MASK | PLL_SEL_LPFR_MASK); reg |= (PLL_REFDIV_VAL << PLL_REFDIV_OFFSET) | (PLL_FBDIV_VAL << PLL_FBDIV_OFFSET); - writel(reg, PORT_REGS(port) + UTMI_PLL_CTRL_REG); + writel(reg, port->regs + UTMI_PLL_CTRL_REG); /* Impedance Calibration Threshold Setting */ - reg = readl(PORT_REGS(port) + UTMI_CAL_CTRL_REG); + reg = readl(port->regs + UTMI_CAL_CTRL_REG); reg &= ~IMPCAL_VTH_MASK; reg |= IMPCAL_VTH_VAL << IMPCAL_VTH_OFFSET; - writel(reg, PORT_REGS(port) + UTMI_CAL_CTRL_REG); + writel(reg, port->regs + UTMI_CAL_CTRL_REG); /* Set LS TX driver strength coarse control */ - reg = readl(PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); + reg = readl(port->regs + UTMI_TX_CH_CTRL_REG); reg &= ~TX_AMP_MASK; reg |= TX_AMP_VAL << TX_AMP_OFFSET; - writel(reg, PORT_REGS(port) + UTMI_TX_CH_CTRL_REG); + writel(reg, port->regs + UTMI_TX_CH_CTRL_REG); /* Disable SQ and enable analog squelch detect */ - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); + reg = readl(port->regs + UTMI_RX_CH_CTRL0_REG); reg &= ~SQ_DET_EN; reg |= SQ_ANA_DTC_SEL; - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL0_REG); + writel(reg, port->regs + UTMI_RX_CH_CTRL0_REG); /* * Set External squelch calibration number and * enable the External squelch calibration */ - reg = readl(PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); + reg = readl(port->regs + UTMI_RX_CH_CTRL1_REG); reg &= ~SQ_AMP_CAL_MASK; reg |= (SQ_AMP_CAL_VAL << SQ_AMP_CAL_OFFSET) | SQ_AMP_CAL_EN; - writel(reg, PORT_REGS(port) + UTMI_RX_CH_CTRL1_REG); + writel(reg, port->regs + UTMI_RX_CH_CTRL1_REG); /* * Set Control VDAT Reference Voltage - 0.325V and * Control VSRC Reference Voltage - 0.6V */ - reg = readl(PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); + reg = readl(port->regs + UTMI_CHGDTC_CTRL_REG); reg &= ~(VDAT_MASK | VSRC_MASK); reg |= (VDAT_VAL << VDAT_OFFSET) | (VSRC_VAL << VSRC_OFFSET); - writel(reg, PORT_REGS(port) + UTMI_CHGDTC_CTRL_REG); + writel(reg, port->regs + UTMI_CHGDTC_CTRL_REG); } static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) @@ -166,22 +178,38 @@ static int mvebu_cp110_utmi_phy_power_off(struct phy *phy) struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); struct mvebu_cp110_utmi *utmi = port->priv; int i; + int reg; /* Power down UTMI PHY port */ - regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), - UTMI_PHY_CFG_PU_MASK); + if (!IS_ERR(port->regs_cfg)) { + reg = readl(port->regs_cfg); + reg &= ~(UTMI_PHY_CFG_PU_MASK); + writel(reg, port->regs_cfg); + } else + regmap_clear_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), + UTMI_PHY_CFG_PU_MASK); for (i = 0; i < UTMI_PHY_PORTS; i++) { - int test = regmap_test_bits(utmi->syscon, - SYSCON_UTMI_CFG_REG(i), - UTMI_PHY_CFG_PU_MASK); + if (!utmi->ports[i]) + continue; + + if (!IS_ERR(utmi->ports[i]->regs_cfg)) + reg = readl(utmi->ports[i]->regs_cfg); + else + regmap_read(utmi->syscon, SYSCON_UTMI_CFG_REG(i), ®); + int test = reg & UTMI_PHY_CFG_PU_MASK; /* skip PLL shutdown if there are active UTMI PHY ports */ if (test != 0) return 0; } /* PLL Power down if all UTMI PHYs are down */ - regmap_clear_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); + if (!IS_ERR(utmi->regs_usb)) { + reg = readl(utmi->regs_usb); + reg &= ~(USB_CFG_PLL_MASK); + writel(reg, utmi->regs_usb); + } else + regmap_clear_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); return 0; } @@ -191,8 +219,15 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) struct mvebu_cp110_utmi_port *port = phy_get_drvdata(phy); struct mvebu_cp110_utmi *utmi = port->priv; struct device *dev = &phy->dev; + const void *match; + enum mvebu_cp110_utmi_type type; int ret; u32 reg; + u32 sel; + + match = device_get_match_data(utmi->dev); + if (match) + type = (enum mvebu_cp110_utmi_type)(uintptr_t)match; /* It is necessary to power off UTMI before configuration */ ret = mvebu_cp110_utmi_phy_power_off(phy); @@ -208,16 +243,45 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) * to UTMI0 or to UTMI1 PHY port, but not to both. */ if (port->dr_mode == USB_DR_MODE_PERIPHERAL) { - regmap_update_bits(utmi->syscon, SYSCON_USB_CFG_REG, - USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK, - USB_CFG_DEVICE_EN_MASK | - (port->id << USB_CFG_DEVICE_MUX_OFFSET)); + switch (type) { + case A380_UTMI: + /* + * A380 muxes between ports 0/2: + * - 0: Device mode on Port 2 + * - 1: Device mode on Port 0 + */ + if (port->id == 1) + return -EINVAL; + sel = !!(port->id == 0); + break; + case CP110_UTMI: + /* + * CP110 muxes between ports 0/1: + * - 0: Device mode on Port 0 + * - 1: Device mode on Port 1 + */ + sel = port->id; + break; + default: + return -EINVAL; + } + if (!IS_ERR(utmi->regs_usb)) { + reg = readl(utmi->regs_usb); + reg &= ~(USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK); + reg |= USB_CFG_DEVICE_EN_MASK; + reg |= (sel << USB_CFG_DEVICE_MUX_OFFSET); + writel(reg, utmi->regs_usb); + } else + regmap_update_bits(utmi->syscon, SYSCON_USB_CFG_REG, + USB_CFG_DEVICE_EN_MASK | USB_CFG_DEVICE_MUX_MASK, + USB_CFG_DEVICE_EN_MASK | + (sel << USB_CFG_DEVICE_MUX_OFFSET)); } /* Set Test suspendm mode and enable Test UTMI select */ - reg = readl(PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); + reg = readl(port->regs + UTMI_CTRL_STATUS0_REG); reg |= SUSPENDM | TEST_SEL; - writel(reg, PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); + writel(reg, port->regs + UTMI_CTRL_STATUS0_REG); /* Wait for UTMI power down */ mdelay(1); @@ -226,16 +290,21 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) mvebu_cp110_utmi_port_setup(port); /* Power UP UTMI PHY */ - regmap_set_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), - UTMI_PHY_CFG_PU_MASK); + if (!IS_ERR(port->regs_cfg)) { + reg = readl(port->regs_cfg); + reg |= UTMI_PHY_CFG_PU_MASK; + writel(reg, port->regs_cfg); + } else + regmap_set_bits(utmi->syscon, SYSCON_UTMI_CFG_REG(port->id), + UTMI_PHY_CFG_PU_MASK); /* Disable Test UTMI select */ - reg = readl(PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); + reg = readl(port->regs + UTMI_CTRL_STATUS0_REG); reg &= ~TEST_SEL; - writel(reg, PORT_REGS(port) + UTMI_CTRL_STATUS0_REG); + writel(reg, port->regs + UTMI_CTRL_STATUS0_REG); /* Wait for impedance calibration */ - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_CAL_CTRL_REG, reg, + ret = readl_poll_timeout(port->regs + UTMI_CAL_CTRL_REG, reg, reg & IMPCAL_DONE, PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); if (ret) { @@ -244,7 +313,7 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) } /* Wait for PLL calibration */ - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_CAL_CTRL_REG, reg, + ret = readl_poll_timeout(port->regs + UTMI_CAL_CTRL_REG, reg, reg & PLLCAL_DONE, PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); if (ret) { @@ -253,7 +322,7 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) } /* Wait for PLL ready */ - ret = readl_poll_timeout(PORT_REGS(port) + UTMI_PLL_CTRL_REG, reg, + ret = readl_poll_timeout(port->regs + UTMI_PLL_CTRL_REG, reg, reg & PLL_RDY, PLL_LOCK_DELAY_US, PLL_LOCK_TIMEOUT_US); if (ret) { @@ -262,7 +331,12 @@ static int mvebu_cp110_utmi_phy_power_on(struct phy *phy) } /* PLL Power up */ - regmap_set_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); + if (!IS_ERR(utmi->regs_usb)) { + reg = readl(utmi->regs_usb); + reg |= USB_CFG_PLL_MASK; + writel(reg, utmi->regs_usb); + } else + regmap_set_bits(utmi->syscon, SYSCON_USB_CFG_REG, USB_CFG_PLL_MASK); return 0; } @@ -274,7 +348,8 @@ static const struct phy_ops mvebu_cp110_utmi_phy_ops = { }; static const struct of_device_id mvebu_cp110_utmi_of_match[] = { - { .compatible = "marvell,cp110-utmi-phy" }, + { .compatible = "marvell,a38x-utmi-phy", .data = (void *)A380_UTMI }, + { .compatible = "marvell,cp110-utmi-phy", .data = (void *)CP110_UTMI }, {}, }; MODULE_DEVICE_TABLE(of, mvebu_cp110_utmi_of_match); @@ -285,6 +360,10 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) struct mvebu_cp110_utmi *utmi; struct phy_provider *provider; struct device_node *child; + void __iomem *regs_utmi; + void __iomem *regs_utmi_cfg; + const void *match; + enum mvebu_cp110_utmi_type type; u32 usb_devices = 0; utmi = devm_kzalloc(dev, sizeof(*utmi), GFP_KERNEL); @@ -293,18 +372,44 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) utmi->dev = dev; + match = device_get_match_data(dev); + if (match) + type = (enum mvebu_cp110_utmi_type)(uintptr_t)match; + + /* Get UTMI memory region */ + regs_utmi = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(regs_utmi)) { + dev_err(dev, "Failed to map utmi regs\n"); + return PTR_ERR(regs_utmi); + } + + /* Get usb config region */ + utmi->regs_usb = devm_platform_ioremap_resource_byname(pdev, "usb-cfg"); + if (IS_ERR(utmi->regs_usb) && PTR_ERR(utmi->regs_usb) != -EINVAL) { + dev_err(dev, "Failed to map usb config regs\n"); + return PTR_ERR(utmi->regs_usb); + } + + /* Get utmi config region */ + regs_utmi_cfg = devm_platform_ioremap_resource_byname(pdev, "utmi-cfg"); + if (IS_ERR(regs_utmi_cfg) && PTR_ERR(regs_utmi_cfg) != -EINVAL) { + dev_err(dev, "Failed to map usb config regs\n"); + return PTR_ERR(regs_utmi_cfg); + } + /* Get system controller region */ utmi->syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "marvell,system-controller"); - if (IS_ERR(utmi->syscon)) { - dev_err(dev, "Missing UTMI system controller\n"); + if (IS_ERR(utmi->syscon) && PTR_ERR(utmi->syscon) != -ENODEV) { + dev_err(dev, "Failed to get system controller\n"); return PTR_ERR(utmi->syscon); } - /* Get UTMI memory region */ - utmi->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(utmi->regs)) - return PTR_ERR(utmi->regs); + if (IS_ERR(utmi->syscon) && + (IS_ERR(utmi->regs_usb) || IS_ERR(regs_utmi_cfg))) { + dev_err(dev, "Missing utmi system controller or config regs"); + return -EINVAL; + } for_each_available_child_of_node(dev->of_node, child) { struct mvebu_cp110_utmi_port *port; @@ -326,6 +431,24 @@ static int mvebu_cp110_utmi_phy_probe(struct platform_device *pdev) return -ENOMEM; } + utmi->ports[port_id] = port; + + /* Get port memory region */ + switch (type) { + case A380_UTMI: + port->regs = regs_utmi + port_id * 0x1000; + break; + case CP110_UTMI: + port->regs = regs_utmi + port_id * 0x2000; + break; + default: + return -EINVAL; + } + + /* assign utmi cfg reg */ + if (!IS_ERR(regs_utmi_cfg)) + port->regs_cfg = regs_utmi_cfg + port_id * 4; + port->dr_mode = of_usb_get_dr_mode_by_phy(child, -1); if ((port->dr_mode != USB_DR_MODE_HOST) && (port->dr_mode != USB_DR_MODE_PERIPHERAL)) {
Armada 380 has similar USB-2.0 PHYs as CP-110. The differences are: - register base addresses - gap between port registers - number of ports: 388 has three, cp110 two - device-mode mux bit refers to different ports - syscon register's base address (offsets identical) - armada-8k uses syscon for various drivers, a38x not Differentiation uses of_match_data with distinct compatible strings. Add support for Armada 380 PHYs by partially restructuting the driver: - Port register pointers are moved to the per-port private data. - Add armada-38x-specific compatible string and store enum value in of_match_data for differentiation. - Add support for optional regs usb-cfg and utmi-cfg, to be used instead of syscon. Signed-off-by: Josua Mayer <josua@solid-run.com> --- drivers/phy/marvell/phy-mvebu-cp110-utmi.c | 209 +++++++++++++++++++++++------ 1 file changed, 166 insertions(+), 43 deletions(-)